Pulley for pulverizing-mills.



No. 840,162.. PATENTED JAN. 1, 1907.

G. E. RUDNIGK. IULLEY FOR PULVERIZING MILLS.

APPLICATION FILED AUG.13. 1906.

2 SHEETS-SHEET 1.

No. 840,162. PATENTED JAN.- 1, 1907.

G. E. R'UDNIGK.

PULLEY FOR PULVERIZING MILLS.

APPLICATION FILE-D AUG.13.1906.

- 2 SHEETS-SHEET 2.

WITNESSES.-

INVENTOR ATTORNEYS l GEORGE E. 1 RUDNICK'; OF IOLA, KANSAS ISpecification of Letters Patent.

PULLEY FoR PULVERlZlNG-MILLS.

Patented J an. 1, 1907.

Application filed Allg'flSt 13, Se lllll NO- 330,409.

more especially for use in connection with pulverizing-mills of thattype wherein a pond ent centrifugally-acting roll-carrying shaft issuspended on a ball mounted in the pulley and rotated therewith. Asusually constructed these pulleys are subject to rapid wear and arepractically incapable of beingrepaired, so that as a consequence thepulleys have to be frequently replaced by new ones and the old pulleysscrapped. The pulleys are therefore a large item of expense in theup-keep of a pulverizin -mill.

The principal object of t 's invention is to overcome these diflicultiesby providing a pulley of simple and inexpensive construction that can berepaired, or the parts-renewed as they become worn, with great facility,thus rendering the pulley more durable and reducing the cost ofmantenance.

A further object is the provisipn of renewable wearing members, arrangedin the body of the pulley so as to receive the wear from the shaftsupporting and driving means housed in the pulley-body.

With these objects in view and others, as will appear as the nature ofthe invention is better understood, the invention comprises the variousnovel features of constructionand arrangement of parts, which will bemore fully described hereinafter, and set forth with particularity inthe claims a pended hereto. In the accompanying d r awings, whichillustrate one of the embodiments of the invention, Figure 1 is a planview of the pulley with the top removed. Fig. 2 is a central verticalsection thereof. Fig. 3 is a bottom plan view. Fig. 4 is a perspectiveview of one of the wearing-plates with which the shaft-suspending ballengages. Fig. 5 is a perspective view of one of the end wearinglates.Fig. 6 is a similar view of one of the ottom wearing members. V

Corresponding parts in the several figures are indicated throughout bysimilar characters of reference. Referring to the drawings, 1 designatesthe web of the pulley, 2 the rim thereof, and 3 the crowned ring, aroundwhich the drivingbelt.of the mill is adaptedto run.- At the center ofthe pulley the web 1 is provided with arectangular or box-like chamber 4for receiving. the shaft-suspending ball and mechanism associatedtherewith for gyrating the roll-carrying shaft according to the usualconstruction. chamber 4 depends a thimble-like journalbearing 6, wherebythe pulley is rotatably mounted on a suitable supporting-frame for themill. The roll-carrying shaft extends freely through the bearings 6, andthe suspending-ball therefor is confined between the side bearingmembers or plates 7. Theends of the chamber 4 accommodate the usualjournals on the suspending-ball and the gibs or other devices associatedwith the journals, according to the usual construction.

In order to take the wear produced by th operating parts of theapparatus that are arranged in the ends of the chamber 4, end bearingmembers 8 and bottom wearing members 9 are provided.

The several wearing members may be secured in place to the body of thepulley in any desired manner, preferably, however, in such a way as topermit of their ready removal when they become worn, so that-new onescan be substituted. According to the preferred form the side and endplates 7 and 8 are held in grooves 10 and 11, provided, respect'ively,in the side and end walls of the chamber 4. The grooves are formed withoverhanging end walls 12, so as to shape them as dovetails. The plates 7and 8 are beveled along their edges so as to engage with the overhanginwalls of the grooves and to be securely held in the latter. The groovesextend vertically, so that when the top or cover of the pulley isremoved the plates can be slid out of the groove by an upward movement.The end plates 8 are beveled at their edges 13 from the front to therear surfaces. The plates 7, however, are each provided with a V-shaped.groove 14, whereby the shoulders for engaging with the overhangin wallsof the retaining-groove 10 are forme and also the flaring portions orshoulders 15, that extend beyond the side walls of the chamber 4.According to the usual construction the portions 15 are integral withthe side walls of the chamber, and as these portions are often chippedor cracked ofi by use the eifective engagement between theshaftsuspending ball and the said portions becomes impaired, so that anew pulley has to From'the bottom 5 of the p be substituted. The frontfaces of the plates 7 are concaved at 16 in conformity to the curvatureof the shaft-suspending ball, and

with these concaved surfaces the ball directly engages. The Wearingmembers 9 closely resemble in construction rivets, whose shanks 17 arereceived in apertures 18 in the bottom 5 of the pulley. Thehead portion'19 of each member 9 is disposed in the chamber 4 and is adapted toreceive the'Wear. These members :may' be held in their respectiveapertures'by friction or otherwise, asdesired.

- From the foregoing description, taken in connection with theaccompanying-drawings, it-is believed that the advantages of thecon-'struction-will be readily appreciated by those skilled :in* the'arttoWhich the invention appertains, so I that further description is thoughtunnecessary.

What is claimedis 1. A pulley for apulverizing-millcompris- I i ing: arectangular chamberiihaving vertical ,grooves in its ends and centr'alvertical 7 tgrooves'in its sides provided-Wi-th overhanging Walls, andremovablebearing-plates havin their edges shaped to' interlock With theWalls'of the groovesand removable in a direction lon itudinal of thegrooves.

2. A pu'lley'for' a pulverizing-rnill comprising a rectangular chamberhavin verticallyexteriding grooves in its side'an end 'Walls,said'grooves' being provided With overhanging Walls, and plates havingtheir edges shaped to interlocBwith the overhanging wallsfor removablyholding the platesin position.

'3. A pulley-for a pulverizingqnill comprising a body formed witha-boX-shaped chamber and having apertures inits bottom, and removableWearing devices arrangedin the said apertures.

In testimony that I claim theforegoing' as my own I have hereto affixedmy signature i in the presence of tWo Witnesses.

- GEORGE: E.'-RUDN-IOK. :Wi-tness es: v

:F. LA'Woons, A Lu-WILOOX.

